/*
 * Copyright 2015-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.cloud.stream.binding;

import java.util.List;

import org.springframework.cloud.stream.binder.PollableMessageSource;
import org.springframework.messaging.MessageChannel;

/**
 * {@link MessageChannelConfigurer} that composes all the message channel configurers.
 *
 * @author Ilayaperumal Gopinathan
 */
public class CompositeMessageChannelConfigurer
		implements MessageChannelAndSourceConfigurer {

	private final List<MessageChannelConfigurer> messageChannelConfigurers;

	public CompositeMessageChannelConfigurer(
			List<MessageChannelConfigurer> messageChannelConfigurers) {
		this.messageChannelConfigurers = messageChannelConfigurers;
	}

	@Override
	public void configureInputChannel(MessageChannel messageChannel, String channelName) {
		for (MessageChannelConfigurer messageChannelConfigurer : this.messageChannelConfigurers) {
			if (messageChannelConfigurer != null) {
				messageChannelConfigurer.configureInputChannel(messageChannel, channelName);
			}

		}
	}

	@Override
	public void configureOutputChannel(MessageChannel messageChannel, String channelName) {
		for (MessageChannelConfigurer messageChannelConfigurer : this.messageChannelConfigurers) {
			if (messageChannelConfigurer != null) {
				messageChannelConfigurer.configureOutputChannel(messageChannel, channelName);
			}
		}
	}

	@Override
	public void configurePolledMessageSource(PollableMessageSource binding, String name) {
		this.messageChannelConfigurers.forEach(cconfigurer -> {
			if (cconfigurer instanceof MessageChannelAndSourceConfigurer) {
				((MessageChannelAndSourceConfigurer) cconfigurer)
						.configurePolledMessageSource(binding, name);
			}
		});
	}

}